export declare const noop: () => void;
export declare const identity: <A>(a: A) => A;
export declare const andThrow: (u: unknown) => void;
export declare const constant: <A>(a: A) => () => A;
export declare const constantTrue: () => boolean;
export declare const constantFalse: () => boolean;
export declare const exists: <A>(a: A | null) => a is A;